README.rdoc

pg

This is a JRuby gem replacement for ruby-pg. The gem should be a drop-in
replacement for ruby-pg version 0.17.1. If you see any inconsistency please
open an issue here.

Another JRuby Postgres adapter is jdbc-postgres.
jruby-pg provides a few interfaces that jdbc-postgres doesn't have.
Most use cases don't require those interfaces, specially if you are
using ActiveRecord. Extra APIs in the pg & jruby-pg gem include:

Async API for querying

Large objects API

Bulk Copy API

Notification API

Documentation

For documentation please refair to the MRI pg gem docs which you can find
here. The original
ruby-pg project can be found here
on github.